These are as I expected, they are a little small but I knew that so I bought a large one. My 7 year old, 43 lb/47 inch skinny athletic son who just grew into size 7 jeans (but needs an adjustable waist) wears medium. He's just outgrown small ones (he wore them when he was wearing size 4/5/6 jeans. They've held up very well, most are still in good condition. Maybe 2 pairs recently ripped around the leg/waist me recommend ordering one size only.
Comfortable & Practical City Threads Underwear: Sensitive-Friendly Boys' Clothing
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